其實c++的結構體可以理解為類似於python的字典，我個人理解， 但有區別

先看結構

#include <iostream>
關鍵字          標記成為新類型的名稱
struct          inflatable
{
    std::string mystr;                   結構成員
    char name[20];
    float volume;
    double price;
};

c++ 在聲明結構變量的時候可以省略關鍵字struct

同時還要註意外部聲明， 和局部聲明

#include <iostream>
#include 
 
<string>
#include <cstring>


struct inflatable
{
    std::string mystr;
    char name[20];
    float volume;
    double price;
};



int main(int argc, char const *argv[]) {
  using namespace std;

  inflatable guest = {
    "hello",
    "Glorious Gloria",
    1.88,
    
 
29.99
  };
  inflatable pal = {
    "world",
    "Audacious Arthur",
    3.12,
    32.99
  };
  int a=12.40;
  std::cout << guest.mystr << ‘\n‘;
  std::cout << a << ‘\n‘;
  std::cout << "Expand your guest list with <<" << guest.name << ">>
 
"
            << "and" << "<<" << pal.name << ">>" << ‘\n‘;
  std::cout << "you can have both for $" << guest.price + pal.price <<‘\n‘;



  return 0;
}

其他結構屬性

#include <iostream>
#include <string>
#include <cstring>


struct inflatable
{
    std::string mystr;
    char name[20];
    float volume;
    double price;
};


int main(int argc, char const *argv[]) {
  using namespace std;
  inflatable guest = {
    "hello",
    "Glorious Gloria",
    1.88,
    29.99
  };
  inflatable choice = guest;   這種方法叫成員賦值
或者

inflatable choice;
choice = guest;

  std::cout << "Expand your guest list with <<" << guest.name << ">>" << ‘\n‘;
  std::cout << "choice choice.mystr ---->" << choice.mystr << ‘\n‘;
  return 0;
}

還可以

struct inflatable
{
    std::string mystr;
    char name[20];
    float volume;
    double price;
} mr_glitz = {"hello", "Glorious", 1.11, 11};
當然，也可以不賦值

結構數組

也可以創建元素為結構的數組， 方法和創建基本類型數組完全相同。例如：

#include <iostream>
#include <string>
#include <cstring>


struct inflatable
{
    std::string mystr;
    char name[20];
    float volume;
    double price;
} mr_glitz = {"hello", "Glorious", 1.11, 11};


int main(int argc, char const *argv[]) {
  using namespace std;

  inflatable guests[2] = {
    {"hello", "doman", 2.1, 2.22},
    // {"world", "corleone", 2.2, 3333}
  };
  std::cout << "guests[0].mystr: " << guests[0].mystr << ‘\n‘;
  std::cout << "guests[1].name: " << guests[1].name << ‘\n‘;

  return 0;
}

結構中的位字段

struct torgle_register
{
  unsigned int SN :  4;
  unsigned int :4;
  bool goodIN : 1;
  bool goodTorgle : 1;
}

torgle_register tr = {14, true, false};

C++復合類型（結構體）